diff --git a/lib/private/Files/ObjectStore/ObjectStoreStorage.php b/lib/private/Files/ObjectStore/ObjectStoreStorage.php
index 89628a7763e87..a6654a7e9a420 100644
--- a/lib/private/Files/ObjectStore/ObjectStoreStorage.php
+++ b/lib/private/Files/ObjectStore/ObjectStoreStorage.php
@@ -494,6 +494,9 @@ public function writeStream(string $path, $stream, int $size = null): int {
 				$stat['size'] = $size;
 			} else {
 				$this->objectStore->writeObject($urn, $stream);
+				if (is_resource($stream)) {
+					fclose($stream);
+				}
 			}
 		} catch (\Exception $ex) {
 			if (!$exists) {